We don’t disagree that there is a market for a cross-platform handwritten note taking app! We would love for Squid to be available on all platforms. We’re a small team and we don’t currently have the resources to expand to Windows (or iOS). We hope this will change someday!

▪We can make a bottom slider (that we can swipe left/right). This will allow us to add infinite number of pens.
▪More over we can add an amazing feature to this bottom slider: • Favourite Pens Groups. • a side-button (or side-up/down-slider "that we can swipe up/down") on that bottom slider which will enable us to switch between different favourite-pens-Groups. • Instead of only having one set of favourite pens, we can have multiple sets, each has its pre-defined pens. This will save a lot of time and will help more productivity. • Instead of using a side button on the slider to switch between groups, we can just swipe up/down to switch.
▪I do video tutorials, this will be very helpful while I'm recording the screen not to go to the time wasting steps to switch a color or between a pen or highlighter.